Green vs Periwinkle — Difference, Contrast & Harmony

Greenexact vs Periwinklenearest

#00FF00 · #BCD4FF

Four independent scores (read the one that fits your goal): Readability 2/100 (fail) · Harmony 61/100 (triadic (soft)) · Distinguishable 91/100 (easy to tell apart) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.

Readability2Fail

The quick brown fox jumps over the lazy dog.

Fail1.1:1

Harmony61Triadic (soft)

Triadic (soft)

99° apart

Distinguishable91Easy to tell apart

normal

tritanopia

ΔE 138 (49 under CVD)

Match0Different

ΔE 138 — different

How different are Green and Periwinkle?

Green and Periwinkle are very different (ΔE 138). They have distinctly different hues (99° apart) and their lightness is different, giving a clear light/dark split.

Can you read one on the other?

Green text on Periwinkle: 1.09:1 (Fail); Periwinkle text on Green: 1.09:1 (Fail). Neither meets AA at body size — nudging one color to #006B00 clears it.

Common questions

Do Green and Periwinkle go well together?

Triadic (soft) — workable but not a textbook harmony (harmony 61/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.

Is Green readable as text on Periwinkle?

Not at body size — the best direction is only 1.1:1, below the 4.5:1 minimum. Nudging one colour to #006B00 clears AA.

What is the colour difference (ΔE) between Green and Periwinkle?

Their CIE76 ΔE is about 138 — very different.

Are Green and Periwinkle the same colour?

clearly different colours (ΔE 138).

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